Software model, WaterGems, which has been prepared and provided for hydraulic design of water networks, can have an effective application in hydraulic design of pressurized irrigation network. Thus it has been tried to apply the available software such as WatNet and WaterGems in designing the water networks in this project. In the pressurized irrigation network plan on the lands of Era village in Mazandaran province of Iran, the need to use a tool, which can be useful in further controlling of design accuracy, has been undeniable considering the extent approximately 50 Ha of lands and non-uniform topography of dales with a height difference about 50 meters in the project lands. This cannot be achieved simply through the manual computing and it needs the time-consuming processes although the control of calculation accuracy in this method needs to be discussed.

Majid Arabfard, PHD Student, Department of Water Engineering Sari Agricultural Sciences and Natural Resources University Sari,Iran Corresponding author: ABSTRACT: Hydraulic control of network has special complexities in the pressurized irrigation plans especially in large projects with large area and non-uniform and irregular topography.

Ali Ghadami Firouzabadi,PHD Student, Department of Water Engineering Sari Agricultural Sciences and Natural Resources University Sari,Iran 2. 1 Optimizing the hydraulic designing of pressurized irrigation network on the lands of village Era by using the computerized model WaterGems Ali Ghadami Firouzabadi 1 and Majid Arabfard 2 1.

Introduction to watergems